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Ticket #11291: patch from "anon": 

test-11291-group-redable-hsdirs-wtests-may8.patch
This commit is contained in:
anonymous 2014-08-28 18:10:21 +00:00 committed by meejah
parent f113a263de
commit c13db1f614
10 changed files with 214 additions and 11 deletions
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5
doc/tor.1.txt
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@ -2078,6 +2078,11 @@ The following options are used to configure a hidden service.
service descriptors to the directory servers. This information is also
uploaded whenever it changes. (Default: 1 hour)
[[HiddenServiceGroupReadable]] **HiddenServiceGroupReadable** **0**|**1**::
If this option is set to 1, allow the filesystem group to read the
hidden service directory and hostname file. If the option is set to 0,
only owner is able to read the hidden service directory. (Default: 0)
TESTING NETWORK OPTIONS
-----------------------

15
src/common/util.c
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@ -1872,6 +1872,9 @@ file_status(const char *fname)
* <b>check</b>&CPD_CHECK, and we think we can create it, return 0. Else
* return -1. If CPD_GROUP_OK is set, then it's okay if the directory
* is group-readable, but in all cases we create the directory mode 0700.
* If CPD_GROUP_READ is set, existing directory behaves as CPD_GROUP_OK and
* if the directory is created it will use mode 0750 with group read permission.
* Group read privileges also assume execute permission as norm for directories.
* If CPD_CHECK_MODE_ONLY is set, then we don't alter the directory permissions
* if they are too permissive: we just return -1.
* When effective_user is not NULL, check permissions against the given user
@ -1910,7 +1913,12 @@ check_private_dir(const char *dirname, cpd_check_t check,
#if defined (_WIN32)
r = mkdir(dirname);
#else
r = mkdir(dirname, 0700);
if (check & CPD_GROUP_READ) {
r = mkdir(dirname, STAT_RWXU|STAT_RGRP|STAT_XGRP);
}
else {
r = mkdir(dirname, STAT_RWXU);
}
#endif
if (r) {
log_warn(LD_FS, "Error creating directory %s: %s", dirname,
@ -1963,7 +1971,8 @@ check_private_dir(const char *dirname, cpd_check_t check,
tor_free(process_ownername);
return -1;
}
if ((check & CPD_GROUP_OK) && st.st_gid != running_gid) {
if ( (check & (CPD_GROUP_OK|CPD_GROUP_READ))
&& (st.st_gid != running_gid) ) {
struct group *gr;
char *process_groupname = NULL;
gr = getgrgid(running_gid);
@ -1978,7 +1987,7 @@ check_private_dir(const char *dirname, cpd_check_t check,
tor_free(process_groupname);
return -1;
}
if (check & CPD_GROUP_OK) {
if (check & (CPD_GROUP_OK|CPD_GROUP_READ)) {
mask = 0027;
} else {
mask = 0077;

27
src/common/util.h
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@ -344,9 +344,34 @@ typedef unsigned int cpd_check_t;
#define CPD_CREATE 1
#define CPD_CHECK 2
#define CPD_GROUP_OK 4
#define CPD_CHECK_MODE_ONLY 8
#define CPD_GROUP_READ 8
#define CPD_CHECK_MODE_ONLY 16
int check_private_dir(const char *dirname, cpd_check_t check,
const char *effective_user);
#if !defined(_WIN32) && !defined (WINCE)
/** Unix like (non win32) group and world permission constants.
* These constants are directly compatible with *nix ABI, e.g. S_IRWXU,*
* NOTE: these are distinct from the private directory flags CPD_*
* which are a portable way for storing private data cross platform.
*/
#define STAT_RWXU 00700
#define STAT_RUSR 00400
#define STAT_WUSR 00200
#define STAT_XUSR 00100
#define STAT_RWXG 00070
#define STAT_RGRP 00040
#define STAT_WGRP 00020
#define STAT_XGRP 00010
#define STAT_RWXO 00007
#define STAT_ROTH 00004
#define STAT_WOTH 00002
#define STAT_XOTH 00001
#endif
/** File open and create options */
#define OPEN_FLAGS_REPLACE (O_WRONLY|O_CREAT|O_TRUNC)
#define OPEN_FLAGS_APPEND (O_WRONLY|O_CREAT|O_APPEND)
#define OPEN_FLAGS_DONT_REPLACE (O_CREAT|O_EXCL|O_APPEND|O_WRONLY)

1
src/or/config.c
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@ -271,6 +271,7 @@ static config_var_t option_vars_[] = {
V(AccelDir, FILENAME, NULL),
V(HashedControlPassword, LINELIST, NULL),
V(HidServDirectoryV2, BOOL, "1"),
V(HiddenServiceGroupReadable, BOOL, "0"),
VAR("HiddenServiceDir", LINELIST_S, RendConfigLines, NULL),
OBSOLETE("HiddenServiceExcludeNodes"),
OBSOLETE("HiddenServiceNodes"),

4
src/or/or.h
View File

@ -4223,6 +4223,10 @@ typedef struct {
/** Should we send the timestamps that pre-023 hidden services want? */
int Support022HiddenServices;
/** Create the Hidden Service directories and hostname files group readable. */
int HiddenServiceGroupReadable;
} or_options_t;
/** Persistent state for an onion router, as saved to disk. */

36
src/or/rendservice.c
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@ -368,10 +368,12 @@ rend_config_services(const or_options_t *options, int validate_only)
for (line = options->RendConfigLines; line; line = line->next) {
if (!strcasecmp(line->key, "HiddenServiceDir")) {
if (service) { /* register the one we just finished parsing */
if (validate_only)
if (validate_only) {
rend_service_free(service);
else
}
else {
rend_add_service(service);
}
}
service = tor_malloc_zero(sizeof(rend_service_t));
service->directory = tor_strdup(line->value);
@ -513,10 +515,12 @@ rend_config_services(const or_options_t *options, int validate_only)
}
}
if (service) {
if (validate_only)
if (validate_only) {
rend_service_free(service);
else
}
else {
rend_add_service(service);
}
}
/* If this is a reload and there were hidden services configured before,
@ -693,10 +697,23 @@ rend_service_load_keys(rend_service_t *s)
{
char fname[512];
char buf[128];
cpd_check_t check_opts = CPD_CREATE;
if (get_options()->HiddenServiceGroupReadable) {
check_opts |= CPD_GROUP_READ;
}
/* Check/create directory */
if (check_private_dir(s->directory, CPD_CREATE, get_options()->User) < 0)
if (check_private_dir(s->directory, check_opts, get_options()->User) < 0) {
return -1;
}
#ifndef _WIN32
if (get_options()->HiddenServiceGroupReadable) {
/** Only new dirs created get new opts, also enforce group read. */
if (chmod(s->directory, STAT_RWXU|STAT_RGRP|STAT_XGRP)) {
log_warn(LD_FS,"Unable to make %s group-readable.", s->directory);
}
}
#endif
/* Load key */
if (strlcpy(fname,s->directory,sizeof(fname)) >= sizeof(fname) ||
@ -733,6 +750,15 @@ rend_service_load_keys(rend_service_t *s)
memwipe(buf, 0, sizeof(buf));
return -1;
}
#ifndef _WIN32
if (get_options()->HiddenServiceGroupReadable) {
/** Also verify hostname file created with group read. */
if (chmod(fname, STAT_RUSR|STAT_WUSR|STAT_RGRP)) {
log_warn(LD_FS,"Unable to make hidden hostname file %s group-readable.", fname);
}
}
#endif
memwipe(buf, 0, sizeof(buf));
/* If client authorization is configured, load or generate keys. */

4
src/test/Makefile.nmake
View File

@ -12,8 +12,8 @@ LIBS = ..\..\..\build-alpha\lib\libevent.lib \
crypt32.lib gdi32.lib user32.lib
TEST_OBJECTS = test.obj test_addr.obj test_containers.obj \
test_controller_events.ogj test_crypto.obj test_data.obj test_dir.obj \
test_microdesc.obj test_pt.obj test_util.obj test_config.obj \
test_controller_events.obj test_crypto.obj test_data.obj test_dir.obj \
test_checkdir.obj test_microdesc.obj test_pt.obj test_util.obj test_config.obj \
test_cell_formats.obj test_replay.obj test_introduce.obj tinytest.obj \
test_hs.obj

1
src/test/include.am
View File

@ -28,6 +28,7 @@ src_test_test_SOURCES = \
src/test/test_cell_queue.c \
src/test/test_data.c \
src/test/test_dir.c \
src/test/test_checkdir.c \
src/test/test_entrynodes.c \
src/test/test_extorport.c \
src/test/test_introduce.c \

2
src/test/test.c
View File

@ -1302,6 +1302,7 @@ extern struct testcase_t crypto_tests[];
extern struct testcase_t container_tests[];
extern struct testcase_t util_tests[];
extern struct testcase_t dir_tests[];
extern struct testcase_t checkdir_tests[];
extern struct testcase_t microdesc_tests[];
extern struct testcase_t pt_tests[];
extern struct testcase_t config_tests[];
@ -1338,6 +1339,7 @@ static struct testgroup_t testgroups[] = {
{ "cellfmt/", cell_format_tests },
{ "cellqueue/", cell_queue_tests },
{ "dir/", dir_tests },
{ "checkdir/", checkdir_tests },
{ "dir/md/", microdesc_tests },
{ "pt/", pt_tests },
{ "config/", config_tests },

130
src/test/test_checkdir.c Normal file
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@ -0,0 +1,130 @@
/* Copyright (c) 2014, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include "orconfig.h"
#include "or.h"
#include <dirent.h>
#include "config.h"
#include "test.h"
#include "util.h"
/** Run unit tests for private dir permission enforcement logic. */
static void
test_checkdir_perms(void *testdata)
{
or_options_t *options = get_options_mutable();
const char *subdir = "test_checkdir";
char *testdir;
cpd_check_t cpd_chkopts;
cpd_check_t unix_create_opts;
cpd_check_t unix_verify_optsmask;
struct stat st;
/** setup data directory before tests. */
tor_free(options->DataDirectory);
options->DataDirectory = tor_strdup(get_fname(subdir));
tt_int_op(mkdir(options->DataDirectory, STAT_RWXU), ==, 0);
/** test: create new dir, no flags. */
testdir = get_datadir_fname("checkdir_new_none");
cpd_chkopts = CPD_CREATE;
unix_verify_optsmask = STAT_RWXO|STAT_RWXG; /* 0077 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: create new dir, CPD_GROUP_OK option set. */
testdir = get_datadir_fname("checkdir_new_groupok");
cpd_chkopts = CPD_CREATE|CPD_GROUP_OK;
unix_verify_optsmask = STAT_RWXO|STAT_RWXG; /* 0077 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: create new dir, CPD_GROUP_READ option set. */
testdir = get_datadir_fname("checkdir_new_groupread");
cpd_chkopts = CPD_CREATE|CPD_GROUP_READ;
unix_verify_optsmask = STAT_RWXO|STAT_WGRP; /* 0027 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: check existing dir created with defaults,
and verify with CPD_CREATE only. */
testdir = get_datadir_fname("checkdir_exists_none");
cpd_chkopts = CPD_CREATE;
unix_create_opts = STAT_RWXU; /* 0700 */
unix_verify_optsmask = STAT_RWXO|STAT_RWXG; /* 0077 */
tt_int_op(0, ==, mkdir(testdir, unix_create_opts));
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: check existing dir created with defaults,
and verify with CPD_GROUP_OK option set. */
testdir = get_datadir_fname("checkdir_exists_groupok");
cpd_chkopts = CPD_CREATE;
unix_verify_optsmask = STAT_RWXO|STAT_RWXG; /* 0077 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
cpd_chkopts = CPD_GROUP_OK;
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: check existing dir created with defaults,
and verify with CPD_GROUP_READ option set. */
testdir = get_datadir_fname("checkdir_exists_groupread");
cpd_chkopts = CPD_CREATE;
unix_verify_optsmask = STAT_RWXO|STAT_WGRP; /* 0027 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
cpd_chkopts = CPD_GROUP_READ;
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: check existing dir created with CPD_GROUP_READ,
and verify with CPD_GROUP_OK option set. */
testdir = get_datadir_fname("checkdir_existsread_groupok");
cpd_chkopts = CPD_CREATE|CPD_GROUP_READ;
unix_verify_optsmask = STAT_RWXO|STAT_WGRP; /* 0027 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
cpd_chkopts = CPD_GROUP_OK;
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
/** test: check existing dir created with CPD_GROUP_READ,
and verify with CPD_GROUP_READ option set. */
testdir = get_datadir_fname("checkdir_existsread_groupread");
cpd_chkopts = CPD_CREATE|CPD_GROUP_READ;
unix_verify_optsmask = STAT_RWXO|STAT_WGRP; /* 0027 */
tt_int_op(0, ==, check_private_dir(testdir, cpd_chkopts, NULL));
tt_int_op(0, ==, stat(testdir, &st));
tt_int_op(0, ==, (st.st_mode & unix_verify_optsmask));
tor_free(testdir);
done:
;
}
#define CHECKDIR(name,flags) \
{ #name, test_checkdir_##name, (flags), NULL, NULL }
struct testcase_t checkdir_tests[] = {
CHECKDIR(perms, 0),
END_OF_TESTCASES
};